Flush tank



B. 0. TILDEN.

FLUSH `TANK.

APPucATloN FILED Nvov, 25. 192|.

Patenteasept; 19,1922,

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Patented Sept. 19, 1922.

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BERT-o. TILDEN, or TREN'roN, NEW JERSEY, AssIGNoR To B. o. '.r. mrc. co., or TRENTON, NEW JERSEY, A CORPORATION or NEW JERSEY.

I FLUSH TANK.

Application led November 25, 1921. Serial No. 517,696.

To all whom z't may concern.'

Be it known that I, BERT 0. TILDEN, a oltizen of the United States, residing at Trenton, in the county of Mercer and State ofy New Jersey, have invented certain new and useful Improvements in Flush Tanks, o-f which the following is a specification.

This invention relates to improvements in flush tanks, designed for use in connection with Water closets, and the like, and has for its particular object to provide a vitreous tank that includes an integrally formed overflow passage which extends partway across two walls of the tank. A further object is to provide a novel outlet fitting which is apertured to receiveI the overflow, and also serveslas a seat for the flush valve. And a further object is to provide a novel and simple cage which is .rigidly supported by the outlet fitting, and which surrounds and guides and protects the valve.

I attain, these objects by the means set 4forth in the detailed description which follows and as illustrated by the accompanying drawing, -in which- Figura;` l is a top plan view of a vitreous flush tank to which my improvement is applied. Fi 2 is a central vertical section 'taken on line 2 2 of Fig. 1.. Fig. 3 is a transverse section taken on line 3-3 of Fig. 1. And Fig. 4 is a detached elevational View of the outlet fitting and the valve cage.

In the drawing-2 represents the body of the flush tank, which is preferably made of china, or other vitreous substance, in one part. The rear wall 2 is .rovided on its inner' surface with a vert1cally arranged overflow passage 2a, which is formed by the molding or casting integrally thereon of a .hollow substantially semi-cylindrical vitreous rib or wall 2b. The passage 2a continues downwardly through the bottom 2, and then extends forgwardly horizontally parallel to the bottom, by means of a depending hollow boss 2d,which is also formed integrally with the body. The bottom 2 has an outlet opening 2e, and the boss 2d which extends partway across the bottom is tively heavy annular flange 3, which seats a shallow circular recess 2f of larger *diameter than the bottom opening2e. The lower end 3*]L of the bushing extends some distance below the 'boss 2d, and is' threaded externally to receive a nut 4, by means o f which the outlet fitting, the flush valve, and related parts are rigidly clamped in place as shown 3c which are preferably equally spaced and communicate with the annular cham-ber 2a of the boss 2d; The apertures 3c afford convenient means for the quick and free escape of the overflowing water which descends through the passage 2a. By this construction and arrangement of the parts, I obviate the usual overflow openings in the bottoms of the flush tanks, and also eliminate the metal overflow pipes o-f common usage and perform all of the functions of the said parts, by the novel and simple integrally formed passage 2a. T'h'e valve 5 is fitted with an upwardly extending stem 5 which. passes loosely throughand is guided by an elevated part 5a, the upper end of said stem being formed into a loop 5*. The guide 5a is supported in the line of the vertical axis of the valveand its seat, by a cage-like structure comprising a plurality of bowed or arched wires or legs 5d, which enclose-.s and prevents the valve from wandering laterally away from the seat. The top ends of the members 5d are inserted into radial sockets in the periphery of the guide 57 while their lower ends are bent inwardly at right angles and are inserted into similar radial sockets 3d, willich are formed in the periphery of the flange 3. The members 5d are preferably permanently secured at opposite ends by any suitable means so that the cage and the bushing may be handledas one part when applied to and removed from the tank. The valve stem 5 is connected by a link G to one end of a rocking lever 7, the opposite end of said lever being pivoted in a metal bracket 7 mounted on the inner front wall of the tank. The lever 7 is rocked for unseating the valve 5 (see dotted lines Figs. 2 and 3), by means of a forked member 7b carried by a shaft 7 which is journalledin the front wall of the tank. The shaft 7 C 'is rocked by a handled which is disposed outside of the tank, in the usual manner. The supply of the flushing wateris admitted to the tank 2 through a pli-pe 8, which extends upwardly inside the tank to a point above the normal level of the water (see dotted line m in Fig. 2), and whose upper end is fittedwith a ball-cock 9,v the said cock being controlled by the usual spherical float 9', Wliose rising and falling movements corresponding to the varying levels of the water in the tank, effects the closing and the opening of said cock, in a well known manner. Ball-cocks of the class are usually adjustable,y and may be set for effecting the filling of the tank to different definite levels. For this plurpose the overflow part 2b and the rear wall 2 are preferably provided with a horizontal rib 2X, for indicating the highest level to.

which the tank may be safely filled without causing unnecessary Waste of the water through the overflow passage 2a.

vThe present impro-vement is particularly applicable to china flush tanks, and its chief value resides in the nove-l, simple and" integral overflowl feature, in combination with the apertured outlet bushing which serves as the seat for the valve, and the novel cage including the axially arranged guide which 'effects the positive registering and seating of the valve after each flushing operation.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent, is- 1 1. A flush tank having a flushing opening in its bottom, said opening being surrounded by an annular recess and by the annular terminal of an overflow passage which discharges into the said opening, one arm of said overflow passage extending rearwardly beneath the bottom of the tank and another arm of said passage extending upwardly between integral portions of the rear wall of the tank to a point above the normal level Yof the flushing water, a bushing disposed in said flushing opening having an annular flange adapted to be seated in said recess, and having radial apertures facing the said annular terminal, the periphery' of said flange being provided with radial sockets, a flush yvalve adapted to be seated in the open top of said bushing, and a cage inclosingsaid valve,said cage having a plurality of arched members whose lower ends enter said radial sockets, the top of said cage comprising a guideV for operatively supporting the stem of the valve.

2. A vitrified flush tank having a flushing opening in its bottom and an annular recess surrounding said opening, the inner face of the rear wall being provided with an integral hollow vertical flat rib containing an overflow Hat and wide passage which extends through the bottom, and the bottom of the tank being formed with an external transverse hollow flat rib through which the overflowing water is carried forwardly to- -wards the flushing opening, one terminal of said external rib comprising an annular chamber which communicates with the flushing opening, a bushing disposed in the flushing opening concentric to said annular chamber and having radial openings for draining said chamber, a valve adapted to be seated in the open top end of said bushing, a wire cage rigidly secured to and rising from the top end of said bushing adapted to guide the valve when opened and closed in the line of the vertical axis of said bushing, and means for unseating the valve.

3. A flush tank having a flushing opening in its bottom the top of the opening comprising an annular recess, a rib formed integrally with and depending from said bottom and having an annular chamber arranged concentric to the flushing opening, lthe said rib extending laterally to the rear wall of the tank, a hollow rib formed integrally and disposed vertically on the inner face of said rear wall, the opening in said rib communieating with the opening in the bottom rib for the passage of overflowing water from the tank into the flushing opening, a bushing disposed concentrically in the flushing opening having an annular flange adapted to be seated in the annular recesssaid bushing having a plurality of radial openings for draining said annular chamber and hav; ing a plurality of radial sockets in its an nular flange, a valv(J adapted to be seated in the top end of said bushing and having an upwardlyextending stem, and a cage enclosing said valve, the bottom of said cage engaging said radial sockets and retained therein by the surrounding wall of said angular. recess, the top of said cage comprising` a guide member through which the stem of the valve plays vertically during the opening and closing of the valve.

In testimony whereof l aliix my signature. BERT 0. TILDEN. 

